Open AccessI-BEAM WITH ZGSP CHORNS AND A CORRUGATED WALL
Author(s) -
N. Vodyahin
Publication year - 2022
Publication title -
vestnik bgtu im. v.g. šuhova
Language(s) - English
Resource type - Journals
ISSN - 2071-7318
DOI - 10.34031/2071-7318-2021-7-4-75-81
Subject(s) - beam (structure) , shipbuilding , structural engineering , stress (linguistics) , enhanced data rates for gsm evolution , materials science , engineering , telecommunications , linguistics , philosophy , archaeology , history
The idea of corrugating the wall of a steel beam in order to increase its local stability and reduce steel consumption by reducing the wall thickness was proposed in Russia quite a long time ago - back in the first half of the last century. This idea turned out to be quite productive. Its implementation took place in aircraft construction, in shipbuilding, and not only in the field of building structures. Over the past nearly a century, a large number of design solutions for beams with a corrugated wall have been developed in domestic and foreign metal building. These solutions differed in: the shape and orientation of the corrugations along the wall; the shape of the section of the belts; peculiarities of the adjoining of the wall along the length of the beam, the presence of technological holes in the wall, etc. Various aspects of the actual operation of beams with corrugated walls and the stress-strain state of the corrugated walls themselves (including taking into account the elastic-plastic stage of work) were studied in relation to various options for the design solutions noted above. This article presents the results of numerical simulation of the operation and analysis of the bearing capacity according to the criteria of several near-edge states of two new variants of structural solutions for beams with a corrugated wall, for which utility model patents have been obtained. In addition, a comparative analysis of the effectiveness of known structural solutions of beams with new solutions proposed by the author was carried out. The article shows that in a number of cases, beams of new design solutions, in terms of the totality of performance indicators for the studied limit states, are more efficient than traditional solutions. The novelty of the design solutions, the priority of which belongs to the authors, lies, in the first case, in the use in the beam of chords made of ZGSP with a rectangular section, the larger side of the contour of which is oriented from the plane of the corrugated wall. In the second case, the constructive solution described above is supplemented with a prestressed tightening located in the cavity of the lower chord SHG.